/* ============================================================
   Design base — mobile-first, pensado para vídeos verticais.
   Tudo é construído primeiro para celular; @media min-width
   apenas "estica" o layout em telas maiores.
   ============================================================ */

:root {
  /* Cores — identidade rosa bebê */
  --color-bg: #ffffff;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #6b6b6b;
  --color-border: #f8dce6;
  --color-accent: #f492b4;
  --color-accent-ink: #1a1a1a;
  --color-accent-soft: #fce0ea;
  --color-locked: #fbeef2;
  --color-success: #1fa672;

  /* Tipografia */
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* Espaçamento */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;

  /* Formas */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;

  /* Camadas fixas (bottom nav / topo) */
  --bottom-nav-height: 64px;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-base);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  padding-bottom: calc(var(--bottom-nav-height) + var(--safe-bottom));
}

body.no-nav {
  padding-bottom: 0;
}

img, video {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

h1, h2, h3, p {
  margin: 0 0 var(--space-3);
}

/* Container central, sempre com cara de "tela de celular" mesmo no desktop */
.screen {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
  background: var(--color-bg);
  position: relative;
}

@media (min-width: 768px) {
  .screen {
    min-height: 100vh;
    border-left: 1px solid var(--color-border);
    border-right: 1px solid var(--color-border);
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.04);
  }
}

.container {
  padding: var(--space-5) var(--space-4);
}

/* Topo fixo simples */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.topbar__back {
  font-size: 20px;
  line-height: 1;
  padding: var(--space-2);
  margin: calc(var(--space-2) * -1);
}

.topbar__title {
  font-weight: 600;
  font-size: 16px;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Marca / logo */
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: 18px;
}

.brand__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* Botões */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 52px;
  padding: 0 var(--space-5);
  border-radius: var(--radius-pill);
  border: none;
  font-size: 16px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-ghost {
  background: transparent;
  color: var(--color-accent);
}

.btn[disabled] {
  opacity: 0.5;
  pointer-events: none;
}

/* Formulários */
.field {
  margin-bottom: var(--space-4);
}

.field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--color-text-muted);
}

.field input,
.field textarea,
.field select {
  width: 100%;
  min-height: 52px;
  padding: 0 var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 16px;
  font-family: inherit;
}

.field textarea {
  min-height: 100px;
  padding: var(--space-3) var(--space-4);
  resize: vertical;
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
}

.form-message {
  font-size: 14px;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
}

.form-message.error {
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

.form-message.success {
  background: color-mix(in srgb, var(--color-success) 15%, transparent);
  color: var(--color-success);
}

/* Card de vídeo vertical (estilo "story/reels") */
.video-card {
  position: relative;
  width: 100%;
  aspect-ratio: 9 / 16;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #000;
}

.video-card video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-card__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-5);
  background: linear-gradient(180deg, rgba(0,0,0,0) 50%, rgba(0,0,0,0.75) 100%);
  color: #fff;
  pointer-events: none;
}

.video-card__overlay h3 {
  color: #fff;
  font-size: 17px;
}

.video-card__overlay p {
  color: rgba(255,255,255,0.85);
  font-size: 13px;
  margin: 0;
}

.video-card__lock {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: var(--space-2);
  background: rgba(0,0,0,0.55);
  color: #fff;
  text-align: center;
  padding: var(--space-4);
}

/* Guia: seções e itens */
.step-section {
  margin-bottom: var(--space-6);
}

.step-section__header {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.step-section__index {
  color: var(--color-accent);
  font-weight: 700;
  font-size: 13px;
}

.step-section__title {
  font-size: 18px;
  font-weight: 700;
  margin: 0;
}

.step-section__desc {
  color: var(--color-text-muted);
  font-size: 14px;
  margin-bottom: var(--space-4);
}

.video-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  padding-bottom: var(--space-2);
}

.video-tile {
  flex: 1 1 140px;
  max-width: 220px;
}

.video-tile .video-card {
  aspect-ratio: 9 / 16;
  margin-bottom: var(--space-2);
}

.video-tile__title {
  font-size: 13px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

/* Selo "grátis" / "em breve" */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 3px 8px;
  border-radius: var(--radius-pill);
}

.badge-free {
  background: color-mix(in srgb, var(--color-success) 15%, transparent);
  color: var(--color-success);
}

.badge-locked {
  background: var(--color-locked);
  color: var(--color-text-muted);
}

/* Bottom nav fixo (estilo app mobile) */
.bottom-nav {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  bottom: 0;
  width: 100%;
  max-width: 480px;
  height: calc(var(--bottom-nav-height) + var(--safe-bottom));
  padding-bottom: var(--safe-bottom);
  background: color-mix(in srgb, var(--color-surface) 92%, transparent);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--color-border);
  display: flex;
  z-index: 20;
}

.bottom-nav__item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-muted);
}

.bottom-nav__item.active {
  color: var(--color-accent);
}

.bottom-nav__icon {
  font-size: 20px;
  line-height: 1;
}

/* Utilitários */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.stack { display: flex; flex-direction: column; gap: var(--space-3); }
.mt-6 { margin-top: var(--space-6); }
.mb-0 { margin-bottom: 0; }
.hidden { display: none !important; }

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.empty-state {
  text-align: center;
  padding: var(--space-7) var(--space-4);
  color: var(--color-text-muted);
}